[Public-List] Sail track rivets on mast - SS Machine screws

Rod Symmes weatherhelm at hotmail.com
Tue Mar 27 07:25:37 PDT 2012 


Actually,  Gord......  Jane says she does not want to hear about that.  She is planning to go shopping for a "little black number" for an upcoming wedding and does  NOT  want you giving me any ideas !!!

Cheers,   Rod

~~~~_/) ~~~~~~~~~~
~~~~~~~_/)  _/) ~~~~~~~
~~_/) ~~~~~~~~~~~~


> Date: Mon, 26 Mar 2012 18:01:18 -0400
> From: mainstay at csolve.net
> To: public-list at lists.alberg30.org
> Subject: Re: [Public-List] Sail track rivets on mast - SS Machine screws
> 
> And the pedestrian stainless steel rivets lasted many decades....
> 
> Gord #426 Surprise
> 
> PS - so nobody attacked me for my zipper analogy??
> 
> 
> On 26/03/12 5:42 PM, "John Birch" <Sunstone at cogeco.ca> wrote:
> 
> > Jeffrey, you are correct, monel (also known as cuprinichol) is absolutely
> > contra indicated on an Aluminum mast. It is much farther apart on the
> > galvanic scale to aluminum than 316 SS
> > 
> > Remember, your sail track is SS ( probably 302 or 304)
> > 
> > SS is the better route for you.
> > 
> > Remember, you are just trying to secure a sail track, not make a battery ; )
> > 
> > Cheers,
> > 
> > John
> > 
> > 
> > 
> > ----- Original Message -----
> > From: "Jeffrey" <fongemie at gmail.com>
> > To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org>
> > Sent: Monday, March 26, 2012 5:30 PM
> > Subject: Re: [Public-List] Sail track rivets on mast - SS Machine screws
> > 
> > 
> >> Welcome Nicki,
> >> 
> >> Thanks for posting.
> >> 
> >> As it turns out, Monel rivets are difficult to find here in the US at
> >> reasonable prices. I found a couple of places selling little packages of
> >> three monel rivets for $16! McMaster Carr has "Corrosion-Resistant Blind
> >> Rivets"  made from copper and nickel-copper; not too bad at $6.51 for 10.
> >> 
> >> After reading more about Monel, I'm questioning that as a solution in this
> >> case. Wickipedia article claims monel not inert when joined with other
> >> metals, which would make sense.
> >> 
> >> "However, because of the problem of
> >> electrolytic<http://en.wikipedia.org/wiki/Electrolytic>action in salt
> >> water (also known as Galvanic
> >> corrosion <http://en.wikipedia.org/wiki/Galvanic_corrosion>), in
> >> shipbuilding monel must be carefully insulated from other metals such as
> >> steel. The New York Times of August 12, 1915 published an article about a
> >> 215 foot yacht, "the first ship that has ever been built with an entirely
> >> monel hull," that "went to pieces" in just six weeks and had to be
> >> scrapped, "on account of the disintegration of her bottom by electrical
> >> action." The yacht's steel skeleton deteriorated due to electrolytic
> >> interaction with the monel."
> >> <http://en.wikipedia.org/wiki/Monel#cite_note-4>
> >> 
> >> -Jeff
> >> 
> >> Jeff Fongemie
> >> #116 Seagrass
> >> 
> >> http://picasaweb.google.com/fongemie
> >> 
> >> 
> >> 
> >> 
> >> 
> >> 
> >> 
> >> On Mon, Mar 26, 2012 at 1:56 PM, Nicki Crutchfield
> >> <nickicrutchfield at mac.com
> >>> wrote:
> >> 
> >>> Hello all,
> >>> My first post after much reading here.
> >>> Monel is the preferred option here in the UK. It is apparently inert when
> >>> mixed with aluminium and, though more expensive than aluminium ones, I
> >>> wouldn't use stainless. Depends if you are in a salt water environment or
> >>> not. The black goop (whatever it's called) is also the way to.
> >>> There, I've made my maiden post.:)
> >>> Kind regards,
> >>> Nicki.
> >>> 
> >>> On 26 Mar 2012, at 18:11, Jeffrey <fongemie at gmail.com> wrote:
> >>> 
> >>>> Thanks John.
> >>>> 
> >>>> Good idea on using some good with adhesion qualities.
> >>>> 
> >>>> -jeff
> >>>> 
> >>>> On Mon, Mar 26, 2012 at 1:07 PM, John Birch <Sunstone at cogeco.ca> wrote:
> >>>> 
> >>>>> We went 316 SS Machine screws on Sunstone, an A-37, Great Lakes boat.
> >>> Same
> >>>>> mast manufacturer, when we did a major overhaul of the rig. Used
> >>>>> Sikkens
> >>>>> 291, now called something else, but the adhesive version. Felt
> >>>>> locktight
> >>>>> might be too corrosive, TefGel being non adhesive at all. Didn't want
> >>> the
> >>>>> machine screws to work loose. So far, no problems - the work was done
> >>>>> at
> >>>>> Klacko Spars in Bronte Ontario back in 1997.
> >>>>> 
> >>>>> Pulled a couple of machine screws to check, after acetoning out the
> >>> holes,
> >>>>> no whitish aluminum oxide present, looked like the threads had been
> >>>>> cut
> >>>>> yesterday. Then rebedded them with more Sikkens. None are loose.
> >>>>> 
> >>>>> Haven't taken the boat offshore in the ocean yet, but given the
> >>>>> salinity
> >>>>> of the upper Chesapeake, I imaging it would be just fine.
> >>>>> 
> >>>>> Danny Klacko recommended this approach - he does great work and knows
> >>> his
> >>>>> stuff.
> >>>>> 
> >>>>> Hope this is a help
> >>>>> 
> >>>>> John
> >>>>> 
> >>>>> 
> >>>>> ----- Original Message ----- From: "Jeffrey" <alberg30nh at gmail.com>
> >>>>> To: "Alberg 30 Public List -- open to all"
> >>>>> <public-list at lists.alberg30.
> >>> **
> >>>>> org <public-list at lists.alberg30.org>>
> >>>>> Sent: Monday, March 26, 2012 12:44 PM
> >>>>> Subject: [Public-List] Sail track rivets on mast
> >>>>> 
> >>>>> 
> >>>>> Hi everyone,
> >>>>>> 
> >>>>>> I need to do something about the main sail track. I know many of the
> >>>>>> rivets
> >>>>>> are bad, last season we kept finding rivets heads on the deck!
> >>>>>> 
> >>>>>> I've read through past messages in the list archives to see what
> >>>>>> others
> >>>>>> have done. I can't decide between hunting down monel rivets, tapping
> >>> for
> >>>>>> SS
> >>>>>> machine screws or just keeping replacing aluminum with aluminum.  I
> >>> like
> >>>>>> the idea of ss machine screws but I'm concerned about corrosion even
> >>> with
> >>>>>> the use of products like TefGel.
> >>>>>> 
> >>>>>> Has there been some newly formed consensus on the subject? Anyone go
> >>> the
> >>>>>> machine screw route and find it became a problem due to corrosion of
> >>> the
> >>>>>> threads in the aluminum holes?
> >>>>>> 
> >>>>>> -Jeff
> >>>>>> 
> >>>>>> Jeff Fongemie
> >>>>>> #116 Seagrass
> >>>>>> 
> >>>>>> http://picasaweb.google.com/**fongemie<
> >>> http://picasaweb.google.com/fongemie>
> >>>>>> ______________________________**_________________
> >>>>>> These businesses support your Association:
> >>>>>> http://www.alberg30.org/store/**A30supporters.html<
> >>> http://www.alberg30.org/store/A30supporters.html>
> >>>>>> Please support them.
> >>>>>> ______________________________**_________________
> >>>>>> Public-List mailing list
> >>>>>> Public-List at lists.alberg30.org
> >>>>>> http://lists.alberg30.org/**listinfo.cgi/public-list-**alberg30.org<
> >>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org>
> >>>>>> 
> >>>>>> 
> >>>>> 
> >>>>> ______________________________**_________________
> >>>>> These businesses support your Association:
> >>>>> http://www.alberg30.org/store/**A30supporters.html<
> >>> http://www.alberg30.org/store/A30supporters.html>
> >>>>> Please support them.
> >>>>> ______________________________**_________________
> >>>>> Public-List mailing list
> >>>>> Public-List at lists.alberg30.org
> >>>>> http://lists.alberg30.org/**listinfo.cgi/public-list-**alberg30.org<
> >>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org>
> >>>>> 
> >>>> 
> >>>> 
> >>>> 
> >>>> --
> >>>> Jeffrey Fongemie
> >>>> _______________________________________________
> >>>> These businesses support your Association:
> >>>> http://www.alberg30.org/store/A30supporters.html
> >>>> Please support them.
> >>>> _______________________________________________
> >>>> Public-List mailing list
> >>>> Public-List at lists.alberg30.org
> >>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>> 
> >> 
> >> 
> >> 
> >> -- 
> >> Jeffrey Fongemie
> >> _______________________________________________
> >> These businesses support your Association:
> >> http://www.alberg30.org/store/A30supporters.html
> >> Please support them.
> >> _______________________________________________
> >> Public-List mailing list
> >> Public-List at lists.alberg30.org
> >> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >> 
> > 
> > 
> > _______________________________________________
> > These businesses support your Association:
> > http://www.alberg30.org/store/A30supporters.html
> > Please support them.
> > _______________________________________________
> > Public-List mailing list
> > Public-List at lists.alberg30.org
> > http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> 
> 
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-List mailing list
> Public-List at lists.alberg30.org
> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
 		 	   		  
 1332858337.0

More information about the Public-List mailing list